Link and Doppler Analysis for LEO Constellation Space-Based IoT

Abstract

Indonesia's geographical condition, which has many rural areas, needs satellite technology to extend the communication network coverage. Based on this need, Indonesia is developing a LEO constellation satellite, and one of its missions is IoT services in the UHF frequency band. This paper aims to calculate and analyze a communication link design between ground and satellite for IoT services on constellation satellites. In addition, the frequency shift due to the satellite movement is also investigated. The result shows that the minimum elevation to establish communication for uplink and downlink is 27 degrees with 0 dB link margin and 0 degrees with 2.69 dB link margin, respectively. Furthermore, the maximum Doppler shift is 9217 Hz at 0 and 180 degrees satellite's elevation.